BD35269HFN-TR ROHM

DatasheeDatasheett 1.5V to V -1V, 1A 1ch CC Ultra Low Dropout Linear Reg ulator BD35269HFN General Description Key Specifications BD35269HFN is an ultra low-dropout linear chipset IN Input Voltage Range: 1.5V to VCC-1V regulator that operates from a very low input supply. It VCC Input Voltage Range: 4.3V to 5.5V offers ideal performance in low input voltage to low Output Voltage: 1.2V(fixed) output voltage applications. The input-to-output voltage Output Current: 1.0A (Max) difference is minimized by using a built-in N-Channel ON-Resistance: 250m(Typ) power MOSFET with a maximum ON-Resistance of Standby Current: 0A (Typ) RON =400m(Max). By lowering the dropout voltage, Operating Temperature Range: -10C to +100C the regulator achieves high output current of up to (I =1.0A) thereby, reducing conversion loss, OUTMAX Package W(Typ) x D(Typ) x H(Max) making it comparable to a switching regulator and its power transistor, choke coil, and rectifier diode constituents. It is a low-cost design and is available in significantly downsized package profiles. The NRCS (soft start) function enables a controlled output voltage ramp-up, which can be programmed to a required power supply sequence. Features Internal High-Precision Output Voltage Circuit(1.20V1%) HSON8 Built-in VCC Undervoltage Lockout Circuit 2.90mm x 3.00mm x 0.60mm (V =3.80V) CC NRCS (Soft start) Function Reduces the Magnitude of In-rush Current Internal N-Channel MOSFET Driver Offers Low ON-Resistance Built-in Short Circuit Protection (SCP) Built-in Current Limit Circuit (1.0A min) Built-in Thermal Shutdown (TSD) Circuit Tracking Function Applications Notebook computers, Desktop computers, LCD-TV, DVD, Digital appliances Product structureSilicon monolithic integrated circuit This product has no designed protection against radioactive rays . www.rohm.com TSZ02201-0J2J0A601050-1-2 2015 ROHM Co., Ltd. All rights reserved. 1/23 TSZ2211114001 02.Nov.2015 Rev.001 BD35269HFN Typical Application Circuit and Block Diagram VCC C1 V CC 1 R2 UVLO2 VIN UVLOLATCH V CC VCC EN VREF2 R1 EN IN UVLO1 IN Reference Current 4 2 CL Block UVLO1 Limit C2 V CC V REF1 NRCS CL UVLO1 LATCH SCP/TSD NRCS0.3. OUT UVLO2 OUT LATCH VREF1 0.4 TSD 5 SCP FB EN UVLO1 C FB C3 EN TSD 6 VOS R2 7 FB R1 NRCS 3 NRCS CNRCS EN/UVLO 8 GND Pin Configuration TOP VIEW 6 VCCVCC 1 GND 8 EN FB 2 7 FIN NRCS 3 VOS 6 VOS IN OUT VIN 4 5 VO Pin Descriptions Pin No. Pin Name Pin Function 1 VCC Power supply pin 2 EN Enable input pin In-rush current protection (NRCS) 3 NRCS capacitor connection pin 4 IN Input voltage pin 5 OUT Output voltage pin 6 VOS Output voltage control pin 7 FB Reference voltage feedback pin 8 GND Ground pin - FIN Connected to heatsink and GND www.rohm.com TSZ02201-0J2J0A601050-1-2 2015 ROHM Co., Ltd. All rights reserved. 2/23 TSZ2211115001 02.Nov.2015 Rev.001